1st time posting here, I'm really lost with this one

My friend just sent my this and I don't know what it means

What does it mean Peetah?? WHAT DOES IT MEAN

Petah i don’t get it

What the deal with them and who are they?

What's so funny about this?

Peter, I don't get it

Please let him explore

Peetah explain it

Oh Peter, oh Peter, I beg of thou

Uuuuhhhhh???

Peetah, what was there?